Title :
Employing the low switching frequency space vector modulators in multi-modular three-level converters
Author :
Saeedifard, M. ; Bakhshai, A.R. ; Rashidinejad, M.
Author_Institution :
Dept. of Electr. Eng., Isfahan Technol. Univ., Iran
Abstract :
This paper presents a novel low switching frequency SVM in conjunction with a modified delayed sampling principle for generating the switching patterns of individual GTO-based three-level units of a multi-module converter structure. Alternative switching strategies are compared with respect to their impact on output voltage spectrum, switching frequency and THD. This paper also shows that the proposed low frequency switching strategies are well appropriate for capacitor voltage balancing too. The validity of the proposed switching schemes has been verified by simulation.
Keywords :
capacitor switching; modulators; sampling methods; switching convertors; capacitor voltage; delayed sampling technique; low switching frequency; multimodular three-level converters; output voltage spectrum; space vector modulation; Delay; Frequency conversion; Frequency modulation; Inverters; Sampling methods; Space technology; Support vector machines; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on
Print_ISBN :
0-7803-7781-8
DOI :
10.1109/CCECE.2003.1226446
